Yoshida, Masayuki
Ogawa, Reiko
Yoshida, Hiroshi
Maeshima, Akiko
Kanai, Yae
Kinoshita, Takayuki
Hiraoka, Nobuyoshi
Sekine, Shigeki
Article History
Received: 28 April 2015
Revised: 2 August 2015
Accepted: 4 August 2015
First Online: 10 September 2015
Competing interests
: The authors declare no conflict of interest.